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Round robin java code

Posted by Unknown Senin, 02 Desember 2013 0 komentar

ROUND ROBIN java code

import java.util.*;

class Process

{ String name;

int at,st;

int rt;

Process(String n,int a,int s)

{ name=n;

at=a;

st=s;

rt=st;

}

class RoundRobin

{ public static void main(String arg[])

{ Scanner sc=new Scanner(System.in);

System.out.println("enter the no. processes : ");

int n=sc.nextInt();

Process p[]=new Process[n];

System.out.println("enter Process details : ");

for(int i=0;i<n;i++)

{ System.out.println("process : "+(i+1)+" : \n enter name of process ");

String s=sc.next();

System.out.println("enter arival time : ");

int a=sc.nextInt();

System.out.println("enter service time : ");

int st=sc.nextInt();

p[i]=new Process(s,a,st);

}

System.out.println("name \t AT \t ST ");

for(int i=0;i<n;i++)

System.out.println(p[i].name+" \t "+p[i].at+" \t "+p[i].st);

Vector<Process> v=new Vector<Process>();

v.setSize(1000);

for(int i=0;i<n;i++)

v.insertElementAt(p[i],p[i].at);

int t=0,i=0;

while(i<=t)

{

try

{

if(v.elementAt(i).rt<=2)

{ System.out.println("process : "+v.elementAt(i).name+" from t= "+t+" to ");

t=t+v.elementAt(i).rt;

System.out.println("t= "+t);

v.remove(i);

}

else

{System.out.println("process : "+v.elementAt(i).name+" from t= "+t+" to ");

t=t+2;

v.elementAt(i).rt=v.elementAt(i).rt-2;

System.out.println("t= "+t);

v.insertElementAt(v.elementAt(i),t-1);

}

i++;

}

catch(Exception e)

{

i++;

}

OUTPUT

Enter the no. processes :6

enter Process details :

process : 1 :

enter name of process A

enter arival time : 0

enter service time : 5

process : 2 :

enter name of process B

enter arival time : 3

enter service time : 6

process : 3

enter name of process C

enter arival time : 5

enter service time : 2

process : 4

enter name of process D

enter arival time : 7

enter service time : 3

process : 5

enter name of process E

enter arival time : 7

enter service time : 5

process : 6

enter name of process F

enter arival time : 9

enter service time : 4

name AT ST

A 0 5

B 3 6

C 5 2

D 7 3

E 7 5

F 9 4

process : A from t= 0 to t= 2

process : A from t= 2 to t= 4

process : A from t= 4 to t= 5

process : B from t= 5 to t= 7

process : B from t= 7 to t= 9

process : C from t= 9 to t= 11

process : E from t= 11 to t= 13

process : D from t= 13 to t= 15

process : F from t= 15 to t= 17

process : E from t= 17 to t= 19

process : D from t= 19 to t= 20

process : F from t= 20 to t= 22

process : E from t= 22 to t= 23

Enjoy !

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